Steel form for laying concrete.



W. H. CRAMER STEEL FORM FOR LAYlNG CONCRETE.

APPLICATION man r2914. ms.

1 02369. Patented Oct. 24, 1916 2 SHEETSSHEET iliVVE/VTOR W1 1? (frame? W. H. CRAMER. STEEL FORM FOR LAYlNG CONCRETE.

APPLICATION FILED FEB. 24. 1916.

Patented Oct. 24, 1916.

2 SHEETS-SHEET 2.

WTH Gran I II a: m

'tion three rails are WALTER H. cEAiuER, 0F DALLAS, 'rExAs.

STEEL FORM LAYING CONCEETE.

Specification of Letters Patent. I

Patented 05st. 24, 1916.

Application filed February 24, 1916. Serial No 80,298.

1 '0 all whoin it may concern:

Be it known thatl, WALTER H. CRAMER,

-a-citizen of the United States, residing at in the county of Dallas and State of Dallas, Texas, have invented certain new and useful Improvements in Steel Forms for Laying Concrete, of which the following is a specifi cation.

' My invention has relation ment in metal forms for use in the layi g of concrete side-walks, curbs and gutters, and in such connection it relates more particularly to the arrangement and construction of such forms whereby the parts of the same may be readily separated for transportation and readjustment and readily assembled and reassembled for use.

In the carrying out of my inventionI provide longitudinal metal strips or rails in the preferred form of channel iron, the base of the channel pieces constituting a face formlfor the concrete and these rails or strips are formed with meeting ends arranged to interlock not: only with each other and with an inclosingstrip but to interlock with and properly support a dividing tem- )let. WVhere side walks are to be construct- ;,.ed the rails are laid inpa with the di- "viding templets serving also to separate the rails the required distance andin addition to the templets the two rails are connected by metal straps. In curb or gutter construcprovided of varying depths and interlocked end to end to each other and totheanchors and steel dividing templets. Straps and channel bars, readily detachable from connected parts, serve to maintain the intermediate rail in proper po sition with-respect to the outer and inner rails.

The nature and scope of my invention will be more fully understood from the following description taken in connection with the accompanying drawings, formingpart hereof, in which,- i i Figure 1 is a perspective. view of a metal form for constructing sidewalks, said form embodying the main features of my invention; Fig. 2, is a side elevational View of the meeting and interlocking ends of the side rails of the form; Fig. 3, is a perspective view of the parts of Fig. 2 separated from each other; Fig. 4, is a perspective view of one of the radius rails for use with the forms; Fig. 5, is a perspective view of a metal form for constructing curbs and gutto an improvesform consist each strip is ters, said form also embodying the main fea tures of my mvention; Fig. 6, is a crosssectional view of. the form illustrated in Fig. 5; Fig. 7, is a detail perspective view of the inter ocking parts of the form; and Fig. 8, is a detail perspective view of one of the supporting channel braces of the form.

eferring to the drawings and particularly to Figs. 1 m4. thereof in.which the form embo'd side rails or longitudinal strips 1, 1, of the of ordinary channel iron and divided into preferably two sections 1?, 1", the ends of a strip of each section. interlocking with an anchor 2. Inasmuch as the means for interlocking the two ends of adjacent sections 1, 1", other through the intermediary of a plate 2 constituting an anchor for the rails is one of the essential features of my invention I will proceed to describe these means in detail. Referring more particularly to Fig. 3 of the drawings, the anchor plate 2 has an upper flanged edge 3 and vertically cut notch 4. One side edge of anchor plate 2 is also provided with a recess 5. In assembling the parts together the anchor plate 2 is inserted in the channel section 1 with its top flange 3 resting under the top flange 6 of the rail section 1. The recess 5 of plate 2 enters ing my invention is devised for. use in the-laying of concrete side walks, the.

to each and interlocks with a recess 7 cut longitudi nally .in the lower flange rail section 1. The contiguous connecting end of rail section. 1 has its top flange bent downward as at 8 and this vertical flange 8'is recessed or notched as at 9 to interlock in the notch 4 of anchor plate 2. When the two rails are to be maintained in parallel relationship as shown in Fig. 1, a dividing templet 10 spans the two rails and is secured to the opposite anchor plates 2. To permit of an interlocking of the ends of the templet 10 with the top edge of the anchor plates the ends of templet 10 are each notched asat 11 to fit when applied to a radiusrail 15. Radius 7 trated when applied to curb and gutter con- 23 to the top struction. In this instance the inner rail 21 and the outer rail 22, both of channel iron but of varying depths, correspond otherwise to rails 1 of the side walk form. Each rail 21 and 22 is made in interlocking sections with anchor plates precisely as are rails 1 of the other construction. In addition to these rails 21 and 22 there is provided an intermediate rail 23, between which and rail22 a space is formed forthe reception of the material forming the curb. The rail'23 is 'supportedabove the ground A (see Fig. 6) andin proper position by the channel braces 24 securing the base of rail of rail 21 and by the straps 25 connecting the top flanges of all three rails together. The intermediate rail 23 is connected up in sections by a slightly different construction from'that used in connecting up rails 1, rails'21, or 22. Each section of rail23' is provided with ears 26 extending beyond the free edges of the sections on the inside of the rail. When the sections are in position to clamp the dividing templet 27 these cars of adjacent sections overlap and are interlocked with the edge of templet 27 Having thus described the nature and objects of my invention, what I'claim as new and desire to secure by Letters Patent is,

1. In a form for laying concrete, a rail formed in a plurality of sections; from channel iron or its equivalent, an anchor plate and means for interlocking the contiguous ends of meeting sections to said anchor plate.

2. Ina form for laying concrete, a rail formed in a plurality of sections from channel iron or its equivalent, an anchor plate, a dividing templet, and means for interlocking the ends of contiguous-sections and the dividing teniplet to said anchor plate.

3. In a form for laying concrete, two parallel flanged rails each divided into a plurality of abutting sections, an anchor plate for each rail interlocked with the ends of the abutting sections and a dividing telnplet spanning the space between the parallel rails and interlocked at each end with the respective anchor plates for the rails;

4. In a form for laying concrete, two

parallel'flanged rails each divided into a plurality of abutting sections, an anchor plate for eachrail interlocked with the ends of the abutting sections and a dividing templet, spanning the space between the parallel rails and interlocked at each end with the respective anchor plates for the rails, in combination with an intermediate rall, braces extending from the fian e of one of the exterior rails to the base of said intermediate rail andarranged to support said intermediate rail, and straps securing the flanges of the parallel rails to the upper flange of the intermediate rail.

5, In a form for laying concrete, two parallel flanged rails each divided into a plurality of sections formed from channel iron or its 'ecuivalent, an anchor plate and means for interlocking the contiguous ends of meeting sections to said. anchor plate, in combination with a radius rail arranged to be interlocked to the anchor plates of the channel iron rails. Y In testimony whereof I have signed my name to this specification.

- WAIJIER H. CRAMER. 

